Multiple choice Which of the following structures originate from the Mullerian ducts? Urogenital sinus Urinary bladder Ovaries Uterus Upper two-thirds of the vagina Reveal answer Fill a bubble to check yourself D Correct answer Explanation Once the Mullerian ducts have reached the urogenital sinus and the vaginal plate has formed, the ducts will begin to fuse centrally. This forms the body of the uterus.